Chapter 14 Embedded Trace Macrocell; About The Etm - ARM Cortex-M3 Technical Reference Manual

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Embedded Trace Macrocell

ETM block diagram

The ETM is an optional debug component that enables reconstruction of program

execution. The ETM is designed to be a high-speed, low-power debug tool that only

supports instruction trace. This ensures that area is minimized, and that gate count is

Figure 14-1 on page 14-3 shows a block diagram of the ETM, and shows how the ETM

interfaces to the Trace Port Interface Unit (TPIU).

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